SPECIFIC question where to find matching numbers on 69 RR engine

NJRR said:

I think you are confused by the replies. The original factory engine in 69 would be stamped with the last digits of the VIN. If it has no VIN number stamped, then it is a warranty block that replaced the original stamped engine. It is possible that the original engine was found to be defective after it came off the assembly line and was then replaced with the warranty block before it was shipped to the dealer. This would explain the fact that there's no numbers on the block but it was never replaced by the nice old lady or your high school buddy. Hope that clarifies things for you.

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Or a 67 block. No vin stamp that year. Have to double check date codes if there is no vin.

Surprised no one asked about the ID pad stamps.....

On a 383 the flat pad is between the distributor and the fuel pump. Are there any letters/numbers stamped on that?

Baby steps Justin... .. and worth noting, my car was "built" on Feb 25th! Dodge was on the "just behind" format back then, engine was built Feb 28th. Exhaust manifolds were cast on Feb 27th.

dadsbee said:

Baby steps Justin...

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Just stating the obvious....or the closest thing within reach...lol.....

What I don't understand if you can see the vin pad by the oil pan....Why can't you make out the casting date?

moparnation74 said:

Just stating the obvious....or the closest thing within reach...lol.....

What I don't understand if you can see the vin pad by the oil pan....Why can't you make out the casting date?

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That's what I was thinking

he owned a shop he had one of his mechanics rebuild it

so crawled under car.
2468310 8 was on it 383 of course and it was stamped 8 18 for sure think the next was 68 but it had bumps on the 8 that made it to hard to read for sure
Would that be a non stamped correct date for a 69 roadrunner? Anyone know how I tell what month the car was built in? would the sequence number tell me? If yes where can I find data on sequence numbers?

no njrr is dont think that does answer my question. I need to explore all options before I just say oh well guess it is a warranty engine. Had too many people tell me that quite a few 69 mopars had blocks put in them with no vin. That it wasnt until 1970 (built in late 69) that ALL engines had stamps on them. I guess my question is now- "exactly what month/year was the absolute last non stamped vin engine put in a roadrunner??" and where can I find documentation of this question?
I am pulling engine out between now and next Wednesday, will clean and repaint engine for sale anyway so I will get a few good pics then

Yes Dukeboy I understand I may not be able to verify it as MATCHING, but I at least want to be able to verify without a doubt it Could be the original engine. I don't want a Mopar expert to come up to me at an auction I'm listing my car in and say, for example, " this is not an original engine, here is documentation that says all engines built after 06-01-68 Will have a stamp on them and your says 08 18 68 so it is NOT original."
Just trying to clarify all angles.

I have seen 1 correct numbered 69 RR that had a very early production date with the matching numbers on the block in the 68 location. Have you checked by the oil sending unit?

Darcy said:

so crawled under car.
2468310 8 was on it 383 of course and it was stamped 8 18 for sure think the next was 68 but it had bumps on the 8 that made it to hard to read for sure
Would that be a non stamped correct date for a 69 roadrunner? Anyone know how I tell what month the car was built in? would the sequence number tell me? If yes where can I find data on sequence numbers?

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Mid August 68 would be about right for a early model year 69 car. Your build sheet should tell you when it was scheduled/released to be built as well as the fender tag. According to what I can find, you have the 105283th Vehicle to be built at St. Louis at that time.

Also, check the front passenger side of your head/block. prior to 68, they stamped the date it was assembled in that area on the B series blocks.

Darcy said:

no njrr is dont think that does answer my question. I need to explore all options before I just say oh well guess it is a warranty engine. Had too many people tell me that quite a few 69 mopars had blocks put in them with no vin. That it wasnt until 1970 (built in late 69) that ALL engines had stamps on them. I guess my question is now- "exactly what month/year was the absolute last non stamped vin engine put in a roadrunner??" and where can I find documentation of this question?
I am pulling engine out between now and next Wednesday, will clean and repaint engine for sale anyway so I will get a few good pics then

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Do you have any pictures of the pads where you scraped the paint off?

Darcy said:

Yes Dukeboy I understand I may not be able to verify it as MATCHING, but I at least want to be able to verify without a doubt it Could be the original engine. I don't want a Mopar expert to come up to me at an auction I'm listing my car in and say, for example, " this is not an original engine, here is documentation that says all engines built after 06-01-68 Will have a stamp on them and your says 08 18 68 so it is NOT original."
Just trying to clarify all angles.

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Where I think you're getting confused, or someone is giving you confusing information is that Mopar did a couple weird things in regards to the Vins from 1968-1970.

First: For model year 1968, all Chrysler engines that were assigned to a vehicle received just the last 8 digits of the sequence number, which matched the last 8 digits on the VON (Vehicle Order number).

Starting in Early 1969, the engines were stamped with the full 13 digits of the VIN. This was later changed, mid model year to just the 8 digits that were the Sequence Order (SO) number from the VIN.

For what little its worth, I have 4 big block mopars sitting here, one is a 62 413 max wedge, the others are a 68, 70 and 73. All three have the 8 digits stamped just above the oil pain rail as mentioned earlier in the thread. The 62 doesn't.

There has never been an exact day/time that it changed. Simply that engine stamping of either the SO or the VON/VIN started on ALL cars in 1968. There are RARE cases of some early 1968 cars/engines/trans not being stamped consistently. That is per credible sources which include ALPAR, Mopar's Collectors Guide, Rick Ernberg

If you still can't find a VIN after you pull the engine, I would suggest date coding everything, taking pics of all date codes on all components such as exhaust manifolds, intake manifold, heads, alternator etc. To be a true " 100% Numbers Matching Car" means more than just the Vin matching on the Body,Trans and Engine. To be "numbers matching" means that everything that is date coded is correct as well. Most people think numbers matching stops at just the drive train and body though. So even if you can't find a VIN stamped on that engine somewhere, if you can date code all the components including the heads and block to being date correct for the build release date of the car, you'd be able to correctly claim it is a Date Code Correct engine, even without the VIN.

Darcy said:

Yes Dukeboy I understand I may not be able to verify it as MATCHING, but I at least want to be able to verify without a doubt it Could be the original engine. I don't want a Mopar expert to come up to me at an auction I'm listing my car in and say, for example, " this is not an original engine, here is documentation that says all engines built after 06-01-68 Will have a stamp on them and your says 08 18 68 so it is NOT original."
Just trying to clarify all angles.

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Without the VIN stamped on the block, there is no way to verify that it is the original engine. Just by showing documentation that it COULD be the original engine would have very little impact on the value of the car IMO, as I think most buyers would have to assume it is not the original engine with no way to document it.

NJRR said:

Without the VIN stamped on the block, there is no way to verify that it is the original engine. Just by showing documentation that it COULD be the original engine would have very little impact on the value of the car IMO, as I think most buyers would have to assume it is not the original engine with no way to document it.

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exactly. ^^ closest it'll ever be without the VIN is "Date code correct"

here are the photos

Can anyone tell me how to tell the date my car came off the line? I have the build sheet but dont know which box to look in

Do you have the fender tag? Post a pic.

Have you found the pad below the distributor?Anything on it?

Guess this thread died?

No, you didn't answer the last 2 questions. Those are directly related to both dates being discussed.

did not look below distributor
no fender tag car was in accident on 70s took out left fender, when I painted we sanded off the primer and it was yellow so fender not original

OK, the scheduled build date would have been on the tag. The distributor pad will have a letter and a number indicating the engine build date.